AMD Radeon RX 580X vs AMD Radeon R9 390X
What is the difference between AMD Radeon RX 580X and AMD Radeon R9 390X. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Polaris 20 | GPU Name | Grenada |
| Polaris 20 XTX (215-0910038) | Model number | Grenada XT (215-0880004) |
| GCN 4.0 | Architecture | GCN 2.0 |
| GlobalFoundries | Foundry | TSMC |
| 14 nm | Process Size | 28 nm |
| 5,700 million | Transistors | 6,200 million |
| 232 mm² | Die Size | 438 mm² |
Graphics Card
| Apr 11th, 2018 | Release Date | Jun 18th, 2015 |
| Polaris (RX 500X) | Family | Pirate Islands (R9 300) |
| Active | Production | Active |
| Polaris | Predecessor | Volcanic Islands |
| PCIe 3.0 x16 | Bus Interface | PCIe 3.0 x16 |
Memory
| 8 GB | Memory Size | 8 GB |
| GDDR5 | Memory Type | GDDR5 |
| 256 bit | Memory Bus | 512 bit |
| 256.0 GB/s | Bandwidth | 384.0 GB/s |
Performance
| 42.88 GPixel/s | Pixel fillrate | 67.20 GPixel/s |
| 193.0 GTexel/s | Texture fillrate | 184.8 GTexel/s |
| 6.175 TFLOPS | FP32 (float) performance | 5.914 TFLOPS |
| 385.9 GFLOPS (1:16) | FP64 (double) performance | 739.2 GFLOPS (1:8) |
Clock Speeds
| 2000 MHz 8 Gbps effective | Memory Clock | 1500 MHz 6 Gbps effective |
Render Config
| 2304 | Shading Units | 2816 |
| 144 | TMUs | 176 |
| 32 | ROPs | 64 |
| 36 | Compute Units | 44 |
| 16 KB (per CU) | L1 Cache | 16 KB (per CU) |
| 2 MB | L2 Cache | 1024 KB |
Board Design
| Dual-slot | Slot Width | Dual-slot |
| 241 mm 9.5 inches | Length | 275 mm 10.8 inches |
| 185 W | Thermal design power (TDP) | 275 W |
| 450 W | Suggested PSU | 600 W |
| 1x HDMI 3x DisplayPort | Display Connectors | 2x DVI 1x HDMI 1x DisplayPort |
| 1x 8-pin | Power Connectors | 1x 6-pin + 1x 8-pin |
| D009 | Board Number | C671, C679-37 |
API support
| 12 (12_0) | DirectX | 12 (12_0) |
| 4.6 | OpenGL | 4.6 |
| 2.1 | OpenCL | 2.0 |
| 1.2 | Vulkan | 1.2 |
| 6.4 | Shader Model | 6.3 |